Nail-making machine.



` l :EAT-ENTEL APR. 151908. n. GIBSLER A TpJ. ALEXANDER.

' NAIL MAKING MACHINE. APPLIUATIOK FILED FEB. 17. 1906.

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I .Witnesses y GRM,

NA. 884,577. Y PATENTED APR, 14,v .1908.,

' a. GI'ESLEE E I. I. ALEXANDER.

NAIL MAKING MACHINE.

. 06. APPLIOATION FILED PEB 17' 19 4 BEBEIEHEBT 3.

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NAIL MAKING MACHINE. A

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- I ldlfbmey UNITED STATES PATENTl OFFICE.

GEORGE GIESLER AND TRUMAN J. ALEXANDER, OF MADISON, INDIANA.

N AIL-MAKING MACHINE.

Specification of Letters Patent.

Patented April 14, 1908.

Application led February 17, 1906. Serial No. 301,616.

in its organization a wire or stock feedingA mechanism, clamping dies for holding the wire during the heading or upsetting operation, an upsetting mechanism and coperating shearing members or blades for severing the wire at the completion of the formation of the nails.

The invention has for its objects to provide a comparatively simple, inexpensive machine of this type wherein the wire will be properly fed forward to the heading mechanism, one wherein thel heading operation will be rapidly and efficiently effected in a series of three successive but continuous steps, thus insuring the proper formation of the head, one wherein the clamping jaws will during the headin operation be iirmly' engaged with the nai blank, and one in which the shearing members will be properly operated at predetermined intervals for severing the completed nails, and will, in such operation, impart the initial formation to the head of the next succeeding nail.

Further objects of the invention are to provide a device of this character wherein the various mechanisms will be operated by a common drive shaft, one in which the movement of the various parts will be positively effected at predetermined, relative intervals, thus insuring rapid and accurate operation of the machine as a whole, and one wherein the parts may be adjusted to compensate for wear on the upsetting plunger and the clamping jaws.

With these and Iother objects in view, the invention comprises the novel features of construction and combination of parts more fully hereinafter described.

In the accompanying drawings: Figure 1 is a side elevation of a machine embodying the invention. Fig. 2 is a vertical, longitudinal section taken on a line centrally through the machine. Fig. 3 is a horizontal sectional plan, the section being taken on the line 3-3 of Fig. 2. Figs. 4, 5 and 6 are detail, sectional views on an enlarged scale of the upsetting mechanism and showing the successive steps in the formationof the nail head.

Referring to the drawings, 1 designates the main frame of the machine sustained by suitable supporting legs 2 and provided with vertically uprising bearing members 3 positioned adjacent the longitudinal center of the frame and having .journaled therein a main drive shaft 4 equipped with a belt pulley 5, there being fixed `upon the shaft 4 a pair of cam heads or wheels 7 disposed respectively at opposite sides of the frame and in turn provi ed with oblique cam grooves or ways 8, while fixed upon the shaft of the transverse center of the frame is an eccentric head 9.

At the forward end of the machine are two jaws 16 and 17 arranged Afor vertical movement in a dove-tailed guide 1S sustained in the frame 1, and between these jaws, the wire is clamped during the formation of the head of the nail.

Any suitable mechanism may be employed for feeding the wire step by step between the -jaws and in .timed relation to the other working parts of the apparatus for the formation of the successive nails. Fixed upon the frame to overlie the uppermost jaw 16 and for holding the same in place is a retaining member or plate 19 having tapped therethrough a pressure screw 20 to bear upon the jaw, while pivoted between its ends at 21 in suitable bearings beneath the frame is a pressure lever 22 provided at its forward end with an adjustable pressure member or screw 23 adapted to engage beneath the jaw 17 and at its rear end with an upturned portion or iinger 24 equipped with an antifriction roller 25 or a purpose which will hereinafter appear, there being threaded through the lever 22 at a point adjacent its rear end an ad'ustin screw 26 adapted to bear beneath t e be plate 27 of the frame 1. It is to be noted in this connection that the air of aws 16, 17, which constitute an anvil) against which the nail is headed serve through the action of the lever 22 upon the jaw 17 to tightly clamp the Wire during the heading o eration, and that the screws 20 and 23 may e manipulated for adjusting the jaws to compensate for wear thereon, the lever being operable, as hereinafter explained, to permit the jaw 17 to move downward and release the wire during the feeding thereof.

Journaled for rotation in bearings at the rear end of the machine is an auxiliary shaft 28 having fixed thereon a cam member 29 provided with cam pro'ections 30, 31, adapted to act u on the roller 25 for moving the lever 22 an, havingla projecting arm 32 pivotally engaged wit a p'itman 33 connected to and for operation by the eccentric 9 by means of an eccentric strap 34, there being provided in the cam member 29 a cam slotor wayv S5 for the reception of a connecting element or pin 36 through the mediu-m of which the cam member is operatively connected with a longitudinally movable carriage 37 slidably mounted in the frame 1 upon the bed plate 27. The rod- 33 comprises a pair of sections connected by a turn buckle 38, thus permitting adjustment of the rod to compensatefor wear upon the cam portions 30, 31, and upon the connectionabetween the cam head 2,9 and carriage.

Slidably mounted in a suitable fuide way 39 in the carriage is a plunger bloc or head 40 having clamped therein by means of a clamping member or' screw 41 a forwardly projfecting'upsetting member or plunger 42 ada' ted too-perate'v through a suitable o ening 1n the front wall of the carriage in which is fitted a tubular -head shaping member or die 43 in the form of a metal sleeve arranged to project slightly beyond the end wall of the carriage and adjustably secured in place by a clamping member or screw 44, While arran-ged ina suitable vertical opening 45 in the plunger block 40 is a wedge-shaped adjusting' memberv 46 designed to bear' upon the rear' end of the heading tool 42 and having a threaded shank on which is tapped an adjusting nut 47,- it being apparent that the membier' 461 which receives the end thrust of the to'ol 42 may be adjusted through the medium of the nut 47 to compensate for wear on the parts. j

The plunger block 40 is operatively con# ne'cted '1n the carriage 37 by means of a pair of rigid operatin members or links 48 pivpted res ecti-vey to the block and rear er'idwall o' the carriage and having their meeting ends pivoted together and tol the lower end ofan actuating member or link 49 in turnpivoted in a crank bend 50' of the shaft 4 and comprising a pair of sections adj-ustably connected by a turn buckle 51, while arranged adjacent the forward end of the frame and respectively on opposite sides of and in alinement with the active' face of the anvil is apair of coperatin'g, shearing members o'r blades 52 disposed horizontally and for' sliding movement in suitable dove-` tai-led g-)uide openings or' ways' 53 provided in guide 'locks or pieces 54 and adapted for movement throu 'h the medi-um of o erating lever-s 55 pivote between theiren s, as at 56, and having their rear ends provided with heads 57 arranged respectively in the cam ways 8 of the cam members 7. The active point upon ends of the shearing members are so formed that they will in cutting the wire in the final step of forming the nails form a sharpened the completed nail and partially upset or flatten transversely the adjacent terminal of the wire 14 as the initial step in the formation of the head upon the next successive nail, while the guide pieces 54 are adapted for vertical adjustment through the mediumof set screws 58 and for horizontal adjustment by set screws 59 in order to bring the knives into operative alinement with each other and to compensate for wear upon the parts of the mechanism.

In practice, supposing the wire 14 to be properly positioned between the clamping dies the pitman 33 will, as the shaft 4 rotates, be operated for moving the carriage 37 forwardly through the medium of the cam head 2'9 to bring the shaping die 43 into contact with the anvil and to cover that portion of the wire from which the nail head is to be formed, whereupon the links 48 will be moved through the medium of the actuating member 49 for carrying the plunger block 40 forwardly and bringing the heading tool 42 into contact with and for compressing the wire to form the nail head, during which operation the cam portion 31 of cam member 29 will act upon the adjacent end of lever 22 to operate the same for pressing the movable jaw 17 into secure clamping engagement with the jaw 16 to properly hold the wire. After the nail head has been properly pressed into' shape, the cam member 29 will be actu# ated for moving the carriage 37 and at the same time carrying the projections 3() and 31 forwardly past the roller 25, thereby releasing the lever 22 and permitting the forward j end of the latter, together with the jaw 17 to move downward and free the Wire 14 sufficiently to `permit of the wire being again properly fe inward. As soon as the wire clamping jaws move a device (not shown) wil feed the wire rearwardly a distance equaling the desired length of the nail, whereupon the levers 55 will be operated by the cam members 7 for movin the shearing members 52 inwardly to sever t e nail and at the same time partially upset the material as the initial step in the formation o'f the head' of the next successive art, the wire feeding nail, as before explained and as seen in Fig. 4. After one nail has been cut ofi' and passed through the discharge opening 60 to the underlying chute 61 the cutting knives will be moved outwardly and the carriage again advanced to a position with the die 43 in contact with the anvil, whereupon the f gripuing the wire will be repeatedand the hea ing tool again moved forwardly to upsetting position, it being noted onreference to Figs. 4, 5 and 6 that in the movement of the heading tool there are three successive,-

1 actuation of the 'jaw 17 by the lever 22 for j though, of course, very rapid and practically continuous, steps caused by a triple movement of the links 48 which insures aproper and even upsetting of the metal to form the head, and further that during movement of the cam member 29 for imparting forward movement to the carriage, the projection 30 will first act on the roller 25 for causing an initial movement of the lever 22 to set the jaw 17 preparatory to its movement to clamping position, while the clamping action of the jaw is caused by the cam projection 31, which is somewhat longer than the projection 30, during its momentary engagement with the roller 25, this movement of the jaw to clamping position, under the action of the projection 31, being simultaneous with the operation of the plunger 42 for heading the nail. It will be understood that in the operation of the machine the movements of the various arts are properly timed in action and perorm their various functions in quick succession, thus insuring a rapid operation of the machine, and furthermore, that the adjustment of the parts through the medium of their respective adjusting screws may be effected to compensate for wear, &c., as heretofore explained.

It will be noted that under the operation of the feeding lever through the medium of the cam head upon the drive shaft, there will be imparted to the wire a` suflicient feeding movement to insure the roper feeding of the stock for forming the nail head.

Having thus described our invention, what we claim is:

l. In a nail making machine, a frame, a drive shaft journaled therein, a carriage movably sustained in the frame and having a tubular shaping die, operative connections between the shaft and carriage for operating the latter, an upsetting member movably arranged in the carriage to operate through said die, and connections between the shaft and member for operating the latter.

2. In a nail makin machine, a frame, a drive shaft journaled therein, a carriage movably sustained in the frame and having a tubular shaping die, operative connections between the shaft and carriage for moving .rocking device mounted on the carriage, a plunger movably sustained in the carriage, and carrying an upsetting member adapted for movement through said die, co erating links connected respectively wit i the plunger and carria e and operative connections between said inks and drive shaft.

3. In a nail making machine, the combination of a frame, a carriage slidable thereon, clamping jaws mounted on the frame for holding the stock of which the nail is formed, aV die in the carriage and cooperating with the jaws to form the head of the nail7 an up-4 setting member associated with the die, a plunger head reciprocating in thecarriage for actuating the u setting member, a driving shaft supporte transversely of the carriage at a point intermediate its ends, a mechanism between the shaft and carria e for reciprocating the latter, and a togg e mechanism connected with the carriage and plunger head and with the shaft to be operated by the latter.

4. In a nail making machine, the combina tion of a sup orting frame, a carriage slidably mounte thereon and having its center portion open, a die in one end of the carriage, clamping jaws arranged in cooperative re tion with the die, an upsetting member coop erating with the die, a plunger head arranged within the carriage and resting slidably on the frame for actuating the said member, a transversely extending shaft disposed over the carria e, a pair of tog le links connected with the p unger head an carria e for moving the former independently of t e latter, a connection between `the shaft and links for straightening and collapsin the latter, a

tIie frame at one end of the carriage, a connection between the shaft and device for actuating the latter, and means connecting the device with the carriage for reciprocating the latter.

In testimony whereof, we affix our signatures in presence of two witnesses.

GEORGE GIESLER. TRUMAN J. ALEXANDER.

Witnesses: A

FRANK HAWLICK, CARL JAcKsoN. 

